autorestart is used for autorestarting Go apps in development or staging environments, but you can try to use in production at your own risk. Works well with go build and rsync.
It designed to be as lightweight as possible, it does not uses fsnotify it just periodically poll os.Stat(filename)
Where is filename is a self binary by default, but you can setup to watch tmp/restart.txt or something else.
On file change it will call syscall.Exec(selfbinary) or you can use function SendSIGUSR2 (useful for grace restart) or write your own.
go get github.com/slayer/autorestart
package main
import "github.com/slayer/autorestart"
func main() {
autorestart.StartWatcher()
http.ListenAndServe(":8080", nil) // for example
}package main
import (
"log"
"http"
"github.com/slayer/autorestart"
)
func main() {
// set period
autorestart.WatchPeriod = 3 * time.Second
// custom file to watch
autorestart.WatchFilename = "tmp/restart.txt"
// custom restart function
autorestart.RestartFunc = autorestart.SendSIGUSR2 // usefull for `github.com/facebookgo/grace`
// or
autorestart.RestartFunc = func () {
if proc, err := os.FindProcess(os.Getpid()); err == nil {
proc.Signal(syscall.SIGHUP)
}
}
// Notifier
restart := autorestart.GetNotifier()
go func() {
<- restart
log.Printf("I will restart shortly")
}()
autorestart.StartWatcher()
http.ListenAndServe(":8080", nil) // for example
}Apache 2.0